Knock sensor module (KY-031) [S040]

Knock sensor module (KY-031) [S040]

https://www.youtube.com/watch?v=zUOMWfGgiZ0

*GitHub : https://github.com/rdiot/rdiot-s040.git

* Specs

13 knock sensor module and a digital interface, built-in LED build a simple circuit to produce percussion flasher. 13 Interface comes with digital LED, will knock sensor connected digital 3 interface, when percussion sensor senses Measure To percussive signals, LED flashing light.

* Contents

- Connect

S ----- D3

middle ----- 5V

- ----- GND

- Key Code

#include <Wire.h> 

#include <LiquidCrystal_I2C.h>

 

int pin = 3;

LiquidCrystal_I2C lcd(0x27,20,4);  // LCD2004

 

void setup()

{

  lcd.init();  // initialize the lcd 

  lcd.backlight();

  lcd.print("start LCD2004");

 

  pinMode(pin,INPUT);

  delay(1000);

 

  lcd.clear();

}

 

void loop()

{

 

  lcd.setCursor(0,0);

  lcd.print("S040:Knock sensor");

 

  int vibration = digitalRead(pin);

 

  lcd.setCursor(0,1);

  lcd.print("digital=" + (String)vibration + "  ");

 

  if(vibration == LOW)

  {

    lcd.setCursor(0,2);

    lcd.print("knock=detected");

  }

  else{

    lcd.setCursor(0,2);

    lcd.print("knock=NONE    ");

  }

  delay(500)

}